About Pressure Switches
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Choosing an Electrical Switch
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Tilt Switches
Often used as position indicators, pump level controls, and machine limit switches, these switches actuate when tilted to a certain angle. They mount horizontally and activate when tilted downward, and deactivate when tilted up. Differential angle is the total angle from the point of activation to the point of deactivation. All combine electromechanical and solid state technologies for reliability and long life.
| No. of Circuits Controlled | Switch Starting Position | Industry Designation | Switching Current @ Voltage | Max. Voltage  | Differential Angle | No. of Wire Leads | Dia. | Lg. | Housing Material | Environmental Rating | Each | ||
With Spade Terminals | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| A | 1 | 1 Off (Normally Open) | SPST-NO | 2.5 A @ 120 V AC | 280V AC | 15° | 2 | 0.53" | 1.88" | Plastic | NEMA 4, IP67 | 000000 | 000000 |
Economy Pressure Switches
Use these switches for applications that need reliable switching but don’t require high accuracy. When a set pressure is reached, they turn equipment on and off, signal automatic controls, or trigger alarms. These are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed). All meet safety standards.
| Style | Setpoint, psi | Approximate Difference Between Setpoint and Reset Point, psi | Max. Continuous Pressure, psi | Max. Short-Term Pressure, psi | Accuracy | Max. Switching Current | Process Temperature Range, °F | Connection Material | For Use With | Each | |
Spade Terminals | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
1/8 NPT Male Pipe Connection | |||||||||||
| B | 2-10 | 0.9 | 250 | 750 | ±5% | 10 A @ 125 V AC 10 A @ 250 V AC 5 A @ 30 V DC | -20° to 220° | Brass | Air, Diesel Fuel, Hydraulic Fluid, Water | 0000000 | 000000 |
| B | 6-30 | 2.5 | 250 | 750 | ±5% | 10 A @ 125 V AC 10 A @ 250 V AC 5 A @ 30 V DC | -20° to 220° | Brass | Air, Diesel Fuel, Hydraulic Fluid, Water | 0000000 | 00000 |
| B | 20-120 | 10 | 250 | 750 | ±5% | 10 A @ 125 V AC 10 A @ 250 V AC 5 A @ 30 V DC | -20° to 220° | Brass | Air, Diesel Fuel, Hydraulic Fluid, Water | 0000000 | 00000 |
Economy Vacuum Switches
Choose these switches when you need reliable switching but not high accuracy. When they reach a set vacuum, they turn equipment on and off, signal automatic controls, or trigger alarms. They are single pole, double throw (SPDT) and can be installed to turn one circuit from off to on (normally open) or from on to off (normally closed). All meet American and European safety standards since they're UL recognized components and CE marked.
| Setpoint, in. of Hg | Approximate Difference Between Setpoint and Reset Point, in. of Hg | Maximum Continuous Pressure, psi | Maximum Short-Term Pressure, psi | Accuracy | Process Temperature Range, °F | Connection Material | For Use With | Each | |
Spade Terminals | |||||||||
|---|---|---|---|---|---|---|---|---|---|
1/8 NPT Male Pipe Connection | |||||||||
| 28.2-2.7 | 3 | 0 | 0 | ±5.5% | -30° to 185° | Chrome-Plated Zinc | Air, Argon, Cleaning Solutions, Diesel Fuel, Gasoline, Hydraulic Fluid, Inert Gas, Nitrogen, Oil, Oxygen, Water | 0000000 | 0000000 |